jaclyn.sanders@LIGO.ORG - posted 17:05, Friday 07 June 2013 (6676)
IMC Beam Centering Measurements
Today I estimated the position of the beam spot on the input mode cleaner mirrors, following the procedure used in LLO alog 5010. The results:
|
Coil drive unbalance (%) |
Position Shift of Node (mm) |
|
| MC1P | -4.0 | -1.5 |
| MC1Y | 1.7 | 0.6 |
| MC2P | -5.9 | -2.2 |
| MC2Y | -4.3 | 1.6 |
| MC3P | -4.1 | 1.5 |
| MC3Y | -7.9 | 3.0 |
I couldn't find documentation on how to get to coil drive imbalance from P2L/Y2L gain, so I wrote up a short document in TeX describing the method to make reproducing these results relatively straightforward.
Non-image files attached to this report
